[hurd,commited] hurd: Avoid more libc.so local PLTs

[Samuel Thibault]

H.J. Lu, on mar. 03 avril 2018 14:16:50 -0700, wrote:
> On Tue, Apr 3, 2018 at 2:07 PM, Samuel Thibault
> <samuel.thibault@ens-lyon.org> wrote:
> > Hello,
> >
> > H.J. Lu, on mar. 03 avril 2018 12:26:33 -0700, wrote:
> >> __libc_longjmp and __libc_siglongjmp are private external functions provided for
> >> libpthread.  They should never be called inside libc.
> >
> > I'm sorry for asking, but are these conventions documented somewhere?
> > These look like magic to me otherwise:
> 
> I don't believe they are well documented.

Ok, then I need an answer to my question:

> > why shouldn't they ever be called from libc?

The existing hurd code does use them for catching signals, so I need to
know how to fix it.

Samuel